Information presentation apparatus

ABSTRACT

Provided is an information presentation apparatus that includes an actuator, a control unit and a belt. The actuator includes a movable portion and is capable of linearly driving the movable portion. The control unit controls the actuator so that the movable portion is driven corresponding to waveform information. The belt is for attaching the actuator to a user.

CROSS-REFERENCE PARAGRAPH

The present application is a continuation application of U.S. patentapplication Ser. No. 15/328,319, now U.S. Pat. No. 10,049,537, filedJan. 23, 2017, which is a national stage entry of PCT/JP2015/003463,filed Jul. 9, 2015, and claims the benefit of priority from priorJapanese Patent Application JP 2014-163152, filed Aug. 8, 2014, theentire content of which is hereby incorporated by reference. Each of theabove-referenced applications is hereby incorporated herein by referencein its entirety.

TECHNICAL FIELD

The present technology relates to an information presentation apparatusthat presents information to a user by using tactile stimulation.

BACKGROUND ART

A mechanism that notifies a user of occurrence of some kind of event byusing tactile stimulation caused by vibration or the like has alreadybeen introduced into many portable apparatuses. For example, in a watchtype electronic apparatus, a vibration generation source provided in thewatch body is driven when the set time has come, the vibration istransmitted to the arm of the user, and thus, such an event that the settime has come is provided to the user by tactile stimulation. This kindof electronic apparatus often uses a vibration motor including a weightsuch as a balance weight provided eccentrically to the rotation shaft asa vibration generation source (see, for example Patent Literature 1).

CITATION LIST Patent Literature

Patent Literature 1: Japanese Patent Application Laid-open No.2011-203277

DISCLOSURE OF INVENTION Technical Problem

Most of the information presentation apparatuses that presentinformation to a user by using tactile stimulation caused by vibrationor the like have not reach the level at which various kinds ofinformation are simply presented. For that reason, there are still manypoints expected to be improved, which are desired to be solved.

In view of the circumstances as described above, it is an object of thepresent technology to provide an information presentation apparatuscapable of favorably presenting information to a user by using tactilestimulation.

Solution to Problem

In order to solve the above-mentioned problem, an informationpresentation apparatus according to a first embodiment of the presenttechnology includes an actuator that includes a movable portion and iscapable of linearly driving the movable portion; a control unit thatcontrols the actuator so that the movable portion is drivencorresponding to waveform information; and a belt for attaching theactuator to a user.

Specifically, in this information presentation apparatus, the actuatorlinearly drives the movable unit corresponding to the waveform of thegiven waveform information. Information is transmitted by tactilestimulation given to a user due to the linear movement of the movableunit.

An end portion of the belt may be fixed to the movable portion, and theinformation presentation apparatus may be configured so that a length ofa portion of the belt is changed by driving of the movable portion in aforward or backward direction, the portion being wrapped around theuser,

The information presentation apparatus may further include acommunication unit that acquires setting information throughcommunication, the setting information including at leaststimulation-type information for identifying a kind of the tactilestimulation, in which the control unit may be configured to generate thewaveform information on the basis of the stimulation-type informationincluded in the acquired setting information.

Accordingly, it is possible to give various kinds of tactile stimulationto a user.

The setting information may further include temporal settinginformation, and the control unit may be configured to generate a timingof driving the movable portion on the basis of the temporal settinginformation included in the acquired setting information.

The information presentation apparatus may further include a pressingportion that is freely movable forward and backward in approaching andseparating directions with respect to an attached portion of the user insynchronization with the movable portion.

Specifically, in this information presentation apparatus, informationcaused by a feeling of pressure is presented to a user by the movementof the pressing unit in forward and backward directions.

In order to solve the above-mentioned problem, an informationpresentation apparatus according to a second embodiment of the presenttechnology includes a plurality of actuators, each of the plurality ofactuators including a movable portion and is capable of linearly drivingthe movable portion; a control unit that controls the plurality ofactuators so that the movable portion is driven corresponding towaveform information; and a belt for attaching the plurality ofactuators to a user.

The belt may include a plurality of coupling belts for coupling theplurality of actuators to each other in series, an end portion of therespective coupling belts being fixed to the movable portion of therespective first actuators, and the information presentation apparatusmay be configured so that a length of a portion of the belt may bechanged in synchronization with driving of the movable portion of atleast a part of the actuators, the portion being wrapped around theuser,

Further, in this information presentation apparatus, each of theplurality of actuators may further include a pressing portion that isfreely movable forward and backward in approaching and separatingdirections with respect to an attached portion of the user insynchronization with the movable portion.

Advantageous Effects of Invention

As described above, according to the present technology, it is possibleto favorably present information to a user by using tactile stimulation.It should be noted that the effect described here is not necessarilylimitative and may be any effect described in the present disclosure.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 A perspective view showing a wearable apparatus according to afirst embodiment of the present technology.

FIG. 2 A block diagram showing the electrical configuration of awearable apparatus 100 according to the first embodiment.

FIG. 3 An exploded perspective view showing the configuration of anactuator 1 according to the first embodiment.

FIG. 4 A plan view showing the configuration of the actuator 1 in FIG. 3excluding a base plate 2 and a top plate 7.

FIG. 5 A cross-sectional view of the actuator 1 in FIG. 3.

FIG. 6 A plan view showing the actuator 1 when being energized.

FIG. 7 A cross-sectional view showing the actuator 1 when beingenergized.

FIG. 8 An overall side view of the wearable apparatus 100 configured byusing the actuator 1.

FIG. 9 A plan view showing the configuration of an actuator 1 a that iscapable of giving tactile stimulation caused by a feeling of tightness.

FIG. 10 A plan view showing the actuator 1 a when being energized.

FIG. 11 A plan view showing the connection structure of an actuator 1 aand a belt 10.

FIG. 12 An overall side view of a wearable apparatus 100 a configured byusing the actuator 1 a.

FIG. 13 An overall side view showing the wearable apparatus 100 a whenbeing energized in FIG. 12.

FIG. 14 An overall side view of a wearable apparatus 100 b configured byusing one actuator 1 a.

FIG. 15 An overall side view of a wearable apparatus 100 c configured byusing the actuator 1 that gives tactile stimulation caused by a feelingof pressure and the actuator 1 a that gives tactile stimulation causedby a feeling of tightness.

FIG. 16 A diagram expressing the tactile stimulation given to a user bythe wearable apparatus 100 with the waveform of driving current suppliedto the actuator.

FIG. 17 A diagram showing an example of a change in a second tactilestimulation with a decrease in the remaining time before the time anddate of an event.

FIG. 18 A diagram showing a setting screen for assigning a first tactilestimulation to the kind of schedule.

FIG. 19 A diagram showing a setting screen for alarm start remainingtime and alarm generation time interval.

FIG. 20 A diagram showing a schedule setting screen.

FIG. 21 A diagram for describing a wearable apparatus 100 d according toa first modified example.

MODE(S) FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present technology will be describedwith reference to the drawings.

<First Embodiment>

A first embodiment in the case where an information presentationapparatus according to the present technology is used as a wearableapparatus that is an electronic apparatus worn by a user for use will bedescribed.

This wearable apparatus is an apparatus that has a function ofpresenting, for example, information related to time to the user. Notethat the information related to time represents information on a generalevent related to time such as information (alarm) presenting that theset time has come and information presenting the remaining time beforethe set time.

As a mechanism that presents the information related to time to a user,an auditory presentation method with electronic sound or the like and avisual presentation method with a display are generally used.

However, sound has a high diffusivity and can be transmitted to otherpeople, which may lead to a noise problem. For that reason, themagnitude of sound needs to be reduced for use in, for example, a publicplace, and thus, the performance for presenting information is limited.On the other hand, the method of visually presenting time information toa user by using a display or the like needs an action to actively lookat the display, which is performed by a user. Therefore, there is a wallthat is difficult to overcome with regard to alarm performance.

In the wearable apparatus according to this embodiment, the informationrelated to time is tactually presented to a user. Note that a tactilesense represents a general sense perceived when it occurs on a bodysurface. For example, there are various kinds of tactile senses such asa pressed tactile sense (feeling of pressure), rubbed tactile sense(feeling of rubbing), hit tactile sense (feeling of hitting), andtightened tactile sense (feeling of tightness).

The presentation of information using a tactile sense has advantagesthat unintended spread of information, which causes a noise problem orthe like, is unlikely to occur, and information can be presented withouta user's active action of confirmation. Further, the wearable apparatusaccording to this embodiment employs a mechanism that presentsinformation by using a tactile sense in such a way that a user canintuitively understand the attribution of the information such asmeaning and importance of the information.

Hereinafter, a wearable apparatus according to a first embodiment of thepresent technology will be described with reference to the drawings.

[Configuration of Wearable Apparatus]

FIG. 1 is a perspective view showing the wearable apparatus according tothis embodiment.

As shown in the figure, a wearable apparatus 100 according to thisembodiment is assumed to be a bracelet-type apparatus that can beattached to an attachment portion such as a wrist of a human (user).

However, the present technology is not limited to a bracelet-type one,and may be those configured to be attached to various attachmentportions from which a tactile sense can be obtained, such as neck,ankle, body, and head.

The wearable apparatus 100 shown in FIG. 1 includes a plurality ofactuators 1 and a plurality of belts 10 (coupling belts) that couple theactuators to each other in series so that one bracelet is formed as awhole. The plurality of actuators 1 may have the same configuration. Theplurality of actuators 1 are coupled to each other at, for example,regular intervals via the belts 10.

Note that the wearable apparatus according to the present technology mayinclude one actuator 1 and one belt 10.

FIG. 2 is a block diagram showing the electrical configuration of thewearable apparatus 100 according to this embodiment.

The wearable apparatus 100 according to this embodiment includes theplurality of actuators 1, . . . , 1, a communication unit 101, acontroller 102, a driving circuit 103, a battery (not shown), and thelike.

Note that the communication unit 101, the controller 102, the drivingcircuit 103, and an electronic part such as a battery (not shown) may bemounted on any one of the actuators or a dedicated unit.

The actuator 1 has a mechanism that generates mechanical displacementfor tactile stimulation and is capable of linearly driving the movableportion in a forward or backward direction. In the wearable apparatus100 according to this embodiment, any one of “a feeling of pressure”felt by a user and “a feeling of tightness” is used as tactilestimulation, for example. The “feeling of pressure” is obtained bycausing a pressing part to move forward and backward toward the surfaceof a wrist of the user to press the surface of the wrist of the user.The “feeling of tightness” is obtained by increasing and decreasing thelength of a portion of the belt 10, which is wrapped around the wrist ofthe user, to tighten and loosen the wrist. The structure of the actuatorthat is capable of giving such tactile stimulation will be describedlater.

The driving circuit 103 generates driving current to be supplied to theactuators 1 on the basis of a control signal from the controller 102.

The communication unit 101 performs wired or wireless communicationbetween the communication unit 101 and an information processingterminal of a user, such as a mobile phone, a personal computer, asmartphone, and a tablet terminal.

The controller 102 includes a CPU 111, a memory 112, and a timer 113.

The CPU 111 stores alarm setting information, which has been transmittedfrom the information processing terminal of the user via thecommunication unit 101, in the memory 112. The alarm setting informationwill be described later.

The CPU 111 generates a timing of emitting alarm and waveforminformation of the alarm on the basis of the current date and time ofthe timer 113 and the alarm setting information, and outputs a controlsignal to the driving circuit 103 so that driving current correspondingto the waveform information is supplied from the driving circuit 103 tothe actuator 1.

The battery is a source of power supply necessary for causing theelectrical element of the wearable apparatus 100 to operate.

[Structure of Actuator 1]

Next, a structural example of the actuator 1 that is capable of givingtactile stimulation caused by a feeling of pressure will be described.

FIG. 3 is an exploded perspective view showing the configuration of theactuator 1 according to the first embodiment.

FIG. 4 is a plan view showing the configuration of the actuator 1 inFIG. 3 excluding a base plate 2 and a top plate 7.

FIG. 5 is a cross-sectional view of the actuator 1 in FIG. 3 and FIG. 4.

As shown in these figures, this actuator 1 includes the base plate 2, aholder 3, a slider 4 (movable portion), a shape-memory alloy wire 5, anelastic plate 6 (pressing portion), and the top plate 7.

The base plate 2 is formed of, for example, a rectangular thin platemember. On the base plate 2, the holder 3 is fixed.

The holder 3 is formed of, for example, a rectangular thin plate member.In the holder 3, an opening portion 31 is formed. One end portion of theopening portion 31 in an X-axis direction is used as a slider holdingspace 31A in which the slider 4 is slidably held in the X-axisdirection. In more detail, the slider 4 has a thickness similar to thatof the holder 3, and is three-dimensionally held in thethree-dimensional space formed by the slider holding space 31A of theholder 3, the upper surface of the base plate 2, and the lower surfaceof the top plate 7.

The inner wall surface of the slider holding space 31A of the holder 3functions as stopper surfaces 31B and 31C and slide guide surfaces 31Dand 31E. The stopper surfaces 31B and 31C are respectively brought intocontact with end surfaces 41 and 42 of the slider 4 in the X-axisdirection to limit the sliding range. The slide guide surfaces 31D and31E are respectively brought into contact with end surfaces 43 and 44 ofthe slider 4 in a Y-axis direction to guide the sliding.

The shape-memory alloy wire 5 is a wire formed of a shape-memory alloy.In this embodiment, one shape-memory alloy wire 5 bent in a V-shape at acentral portion 51 is used. The central portion 51 of the shape-memoryalloy wire 5 is locked at a locking portion 45 provided to the slider 4.End portions 52, 52 of the shape-memory alloy wire 5 are bonded to apair of electrode units 32, 32 provided on the upper surface of theholder 3. Specifically, the shape-memory alloy wire 5 is placed to bepulled across a surface in parallel with the sliding surface of theslider 4. The pair of electrode units 32, 32 is provided on the surfaceof one end portion of the holder 3 in the X-axis direction. On the otherend portion of the holder 3 in the X-axis direction, the slider holdingspace 31A is provided. In more detail, the pair of electrode units 32,32 is provided at positions away from each other from the centralposition of the holder 3 in the Y-axis direction on the surface of theone end portion of the holder 3.

To the shape-memory alloy wire 5, current flows from a driving circuit(not shown) via the pair of electrode units 32, 32. When the temperatureof the shape-memory alloy wire 5 has reached a predetermined temperature(specific temperature) by the joule heat generated by the currentflowing through the shape-memory alloy wire 5, the shape-memory alloywire 5 contracts in a line length direction. Since the central portion51 of the shape-memory alloy wire 5 is locked at the locking portion 45provided to the slider 4, the slider 4 is pulled toward the side of thebonding points of the end portions 52, 52 of the shape-memory alloy wire5, and slides in an X1 direction in the slider holding space 31A whenthe shape-memory alloy wire 5 contracts in the line length direction, asshown in FIG. 6 and FIG. 7.

Further, when the energization to the shape-memory alloy wire 5 isstopped and the temperature of the shape-memory alloy wire 5 falls belowthe predetermined temperature (specific temperature), the shape-memoryalloy wire 5 restores the original length before contraction. As aresult, the slider 4 slides in the slider holding space 31A of theholder 3 in a direction opposite to the X1 direction and returns to theposition shown in FIG. 4 and FIG. 5.

The elastic plate 6 (pressing portion) is formed of a thin plate elasticmember. An end portion 61 of the elastic plate 6 is fixed to the slider4, and the other end portion 62 of the elastic plate 6 is fixed to theone end portion of the holder 3 in the X-axis direction. On the otherend portion of the holder 3 in the X-axis direction, the slider holdingspace 31A is provided.

The distance between the fixed points of the elastic plate 6 is changedalong with sliding of the slider 4 in the X-axis direction. When theshape-memory alloy wire 5 is energized, the slider 4 slides in theslider holding space 31A in the X1 direction, and the distance betweenthe fixed points of the elastic plate 6 is decreased. At this time, theelastic plate 6 is elastically deformed in a Z1 direction as shown inFIG. 7 by receiving pressure from the side of the fixed points, and thusis in a predetermined warped state.

In this actuator 1, slight warpage in the direction toward the top plate7 (in the Z1 direction) is given to the elastic plate 6 as the initialdistortion when the slider 4 is located at the position where theshape-memory alloy wire 5 is not energized (position shown in FIG. 4 andFIG. 5). Accordingly, it is possible to reliably make the elastic plate6 in a predetermined warped state in which the elastic plate 6 iselastically deformed in the direction toward the top plate 7 (in the Z1direction), when the shape-memory alloy wire 5 is energized.

When the slider 4 slides in the slider holding space 31A in thedirection opposite to the X1 direction after the energization to theshape-memory alloy wire 5 is stopped, the distance between the fixedportions of the elastic plate 6 is increased. As a result, the elasticplate 6 returns to a slight warped state by the initial distortion.

The top plate 7 is formed of, for example, a rectangular thin platemember. At the position of the top plate 7, which substantially facesthe elastic plate 6, an opening portion 71 is provided. This openingportion 71 is a portion for making at least a part of the elastic plate6 in the predetermined warped state when the shape-memory alloy wire 5is energized project to the position higher than the upper surface ofthe top plate 7.

As described above, in this actuator 1, it is possible to make theslider 4 slide by the movement of the contraction of the shape-memoryalloy wire 5 in the line length direction when being energized,elastically deform the elastic plate 6 by decreasing the distancebetween the fixed points of the elastic plate 6 whose one end is fixedto this slider 4, and generate displacement in a direction perpendicularto the sliding surface of the slider 4 (in the Z-axis direction). Thatis, with a little number of parts, it is possible to generatedisplacement for elastically deforming the elastic plate 6 by themovement of the contraction of the shape-memory alloy wire.

Further, because this actuator 1 includes the base plate 2, the holder3, the slider 4, the elastic plate 6, and the top plate 7 combined inthe plate thickness direction, which are each formed of a thin platemember, and the shape-memory alloy wire 5 is placed to be pulled acrossthe surface direction of the plate parts, it is possible to achieve athickness reduction and size reduction.

FIG. 8 is an overall side view of the wearable apparatus 100 configuredby using the actuator 1.

The actuators 1 are coupled to each other by the belts 10 in series sothat elastic plates 6 project toward the inside of the loop by beingelastically deformed when it is attached to a wrist 90 of a user.

The controller 102 outputs a control signal to the driving circuit 103so that driving current is supplied to the actuators 1 at the same time.Accordingly, the elastic plates 6 of the actuators 1 are elasticallydeformed in synchronization with each other, and tactile stimulationcaused by a feeling of pressure is concurrently given to the wrist 90 ofthe user.

Next, a structural example of an actuator 1 a that is capable of givingtactile stimulation caused by a feeling of tightness will be described.

FIG. 9 and FIG. 10 are each a plan view showing the configuration of theactuator 1 a that is capable of giving tactile stimulation caused by afeeling of tightness.

This actuator 1 a is configured so that the sliding displacement of aslider 4 a is made to be an output of the actuator 1 a.

Specifically, in this actuator 1 a, when the shape-memory alloy wire 5is energized, the shape-memory alloy wire 5 contracts in the line lengthdirection as shown in FIG. 10, and the slider 4 a slides the sliderholding space 31A in the X1 direction by being pulled toward the side ofthe bonding portions of the end portions 52, 52 of the shape-memoryalloy wire 5.

When the energization to the shape-memory alloy wire 5 is stopped andthe temperature of the shape-memory alloy wire 5 falls below apredetermined temperature (specific temperature), the shape-memory alloywire 5 restores the original length before contraction. As a result, theslider 4 a slides in the slider holding space 31A of a holder 3 a in thedirection opposite to the X1 direction, and returns to the positionshown in FIG. 9.

FIG. 11 is a plan view showing the connection structure of this actuator1 a and the belt 10.

As shown in the figure, one end portion of the belt 10 is connected toan end portion of the slider 4 a of the actuator 1 a in the X-axisdirection, and the other end portion of the belt 10 is connected to anend portion 35 of the holder 3 a opposite to the end portion to whichthe slider holding space 31A is provided. Accordingly, the wearableapparatus 100 a in which the actuator 1 a and the belt 10 forms one loopis configured. In this the wearable apparatus 100 a, the slider 4 aslides in the slider holding space 31A in the X1 direction when theshape-memory alloy wire 5 is energized, thereby reducing the wholelength of the loop, i.e., the length of the portion wrapped around thewrist 90 of the user, as shown in FIG. 12 and FIG. 13. As a result, thewrist 90 is tightened. This feeling of tightness is given to the humanas information such as notification of occurrence of some kind of eventand content of the event.

Although the wearable apparatus 100 a configured by using the pluralityof actuators 1, 1 a has been described above, it is possible toconfigure the wearable apparatus 100 a that is capable of giving similartactile stimulation to a user by using one actuator 1 a as shown in FIG.14, for example. Note that although FIG. 14 shows the case where theactuator 1 a that gives tactile stimulation caused by a feeling oftightness is used, it goes without saying that it may be replaced withthe actuator 1 that gives tactile stimulation caused by a feeling ofpressure.

Further, as shown in FIG. 15, a wearable apparatus 100 c may beconfigured by using the actuator 1 that gives tactile stimulation causedby a feeling of pressure and the actuator 1 a that gives tactilestimulation caused by a feeling of tightness. In this case, thecontroller 102 may perform control so that driving current is suppliedto the actuator 1 that gives tactile stimulation caused by a feeling ofpressure and the actuator 1 a that gives tactile stimulation caused by afeeling of tightness at the same time or driving current is supplied ata shifted timing.

Note that the present technology is not limited to the above-mentionedactuators 1, 1 a that use the shape-memory alloy. For example, anactuator based on another operating principle such as an electromagneticlinear motor and a piezoelectric linear motor may be used.

[Description of Behavior and Operation]

In the following description, “the wearable apparatus 100 according tothis embodiment” represents any one of the above-mentioned wearableapparatuses 100 a, 100 b, and 100 c.

(1. Regarding Variation of Tactile Stimulation)

Because the wearable apparatus 100 according to this embodimentdescribed above employs the actuators 1, 1 a that linearly drive themovable portion, it is possible to provide many variations of movementof the movable portion as compared with the case where a rotarydriving-based actuator such as an eccentric motor is used.

For example, the following parameters can be selected:

-   A. Time (Speed) of one stimulation;-   B. Strength of one stimulation;-   C. Number of times of stimulation;-   D. Interval of stimulation;-   E. Rhythm of stimulation; and-   F. Combination of two or more parameters described above.

Further, in the case where a plurality of actuators are used,information can be assigned also to the following conditions:

-   G. Which actuator is driven; and-   H. In what order actuators are driven.

Further, in the case where a plurality of actuators having differentkinds of tactile stimulation are used as shown in FIG. 15, informationcan be assigned also to the following conditions:

-   I. Which kind of actuator is driven; and-   J. In which kind of order actuators are driven.

FIG. 16 is a diagram expressing the tactile stimulation given to a userby the wearable apparatus 100 according to the above-mentionedembodiment with the waveform of driving current supplied to theactuator.

This waveform includes a preceding first tactile stimulation waveformand a second tactile stimulation waveform caused at a predeterminedinterval after the first tactile stimulation waveform. Specifically, inthis waveform, the preceding first tactile stimulation and thesubsequent second tactile stimulation are transmitted to a user asdifferent tactile stimulation because there is an appropriate intervalbetween them.

The preceding first tactile stimulation waveform includes, for example,a waveform for one pressure feeling stimulation and a waveform forsubsequent one tightness stimulation. The second tactile stimulationwaveform includes, for example, a waveform for a plurality of times ofpressure feeling stimulation. These waveforms are each only a specificexample, and what information or meaning is assigned to the parameter ofthe waveform can be arbitrarily determined. For example, the firsttactile stimulation waveform may be a waveform for one pressure feelingstimulation, and the second tactile stimulation waveform may be awaveform for one pressure feeling stimulation similarly.

(2. Application to Alarm Apparatus)

This wearable apparatus 100 can be used as an alarm apparatus formanaging the schedule of a user, for example.

For example, a kind of schedule is assigned to the first tactilestimulation waveform. The kind of schedule represents a category forclassifying schedule, such as “work,” “House,” “Play,” “Child,” and“Parents.” This assignment may be performed by a user. The method ofassigning the first tactile stimulation waveform to the kind of schedulewill be described later.

On the other hand, to the second tactile stimulation waveform, theremaining time before the time and date of an event is assigned, forexample. The remaining time before the time and date of an eventrepresents the difference between the time and date at which the eventis going to occur and the present time and date. In the second tactilestimulation waveform, parameters such as number of times of stimulation,time, and speed are automatically changed depending on the remainingtime before the time and date of an event. For example, as the remainingtime before the time and date of an event is reduced, the number oftimes of stimulation is increased or the time is increased. The user canintuitively recognize that the time and date of an event graduallyapproaches through the change in stimulation. Note that the example ofFIG. 16 shows the case where the remaining time before the time and dateof an event is reflected on the number of times of stimulation in thesecond tactile stimulation waveform.

That is, the user can recognize the occurrence of information and thekind of schedule by receiving the preceding first tactile stimulation,and recognize how much the time and date of an event related to the kindof schedule has approached by receiving the second tactile stimulationcaused at a predetermined interval.

Some users divide the importance of related events depending on the kindof schedule. Therefore, when the user recognizes that it is notificationof important information by the first tactile stimulation, the user canpay attention to the subsequent second tactile stimulation, for example.

FIG. 17 is a diagram showing an example of a change in the secondtactile stimulation with a decrease in the remaining time before thetime and date of an event.

As shown in the figure, examples of the method of changing the secondtactile stimulation with a decrease in the remaining time before thetime and date of an event include a method of increasing the number oftimes of stimulation, a method of increasing the acceleration ofstimulation, a method of shortening the interval of stimulation, and amethod of increasing the strength of stimulation. Which method isemployed may be fixed for each kind of schedule, or selected by a user,for example.

(3. Regarding Alarm Setting)

Next, various kinds of setting necessary for the user to receivenotification of information by using the above-mentioned first tactilestimulation and second tactile stimulation will be described.

This setting is performed in the information processing terminal of theuser, which is capable of communicating with the wearable apparatus 100according to this embodiment.

The information processing terminal includes a hardware configuration ofa computer such as a CPU, a memory, an input device, a display device, acommunication unit, and a storage device.

In the memory, an application program for causing the CPU to executeprocessing necessary for setting the alarm setting information in thewearable apparatus 100 and the like are stored.

The CPU causes the display device to display, for example, settingscreen for initial setting information or setting screen for scheduleinformation in accordance with the application program. The CPUgenerates initial setting information or schedule setting information byprocessing various kinds of information or commands input from the inputdevice used by a user, and uses the communication unit to transmit it tothe wearable apparatus 100 according to this embodiment through wirelessor wired communication.

The setting includes initial setting and schedule setting that can beperformed at any time.

First, the initial setting will be described.

The initial setting information includes, for example, the followingitems:

-   1. First tactile stimulation to the kind of schedule; and-   2. Alarm start remaining time and alarm generation time interval.

The method of changing the second tactile stimulation is set as adefault.

FIG. 18 is a diagram showing a setting screen for assigning the firsttactile stimulation to the kind of schedule.

To this setting screen, an icon selection area 161, a selection area 162for the kind of schedule, and a selection area 63 for the first tactilestimulation are provided.

In this setting screen, the user first selects a favorite icon from theicon selection area 161, the kind of arbitrary schedule from theselection area 162 for the kind of schedule, and then favorite firsttactile stimulation from the selection area 63 for the first tactilestimulation. The CPU associates pieces of information on the icon, kindof schedule, and first tactile stimulation selected by the user witheach other, and stores in the memory as a set of “user settinginformation related to the first tactile stimulation.”

Note that on the selection area 63 for the first tactile stimulation,words for expressing the first tactile stimulation are displayed. Here,“squeeze” represents the feeling of tightness. “Tap” represents thefeeling of pressure. Therefore, for example, “Tap squeeze” representsthe first tactile stimulation shown in FIG. 16. Instead of suchexpressions using words, waveforms may be displayed. Further, thewearable apparatus 100 may execute the first tactile stimulationselected by the user from the selection area 63 for the first tactilestimulation so that the user may determine the favorite first tactilestimulation through actual experience of the first tactile stimulation.

Next, the alarm start remaining time and alarm generation time interval,which is another target of the initial setting, will be described.

The user can set information on the remaining time before generation ofthe first alarm (alarm start remaining time) for the time and date of anevent during the initial setting. This alarm start remaining time is,for example, information such as 1 hour ago, 1 day ago, and 1 week agofor the time and date of an event. The user can specify informationrelated to the time interval for repeatedly generating alarm(information on the alarm generation time interval) with the setting ofthis alarm start remaining time. This information on the alarmgeneration time interval is, for example, information for specifying thenumber of temporal division of “1 day,” which is the interval ofgeneration of alarm, in the case where the alarm start remaining time is“1 day.”

FIG. 19 is a diagram showing a setting screen for the alarm startremaining time and the alarm generation time interval.

On the first setting screen, a plurality of alarm assignment buttons 68and 69 are displayed. In the example of FIG. 19, the alarm assignmentbutton 68 represented by “A” and the alarm assignment button Brepresented by “B” are displayed. Note that the number of alarmassignment buttons may be three or more.

The user selects any of the alarm assignment buttons (68 or 69) in thissetting screen. When the alarm assignment button (68 or 69) is selected,the CPU displays a setting instruction button 171 for the alarm startremaining time and a setting instruction button 72 for the alarmgeneration time interval. Here, assumption is made that the user selectsthe setting instruction button 171 for the alarm start remaining time.When receiving this selection, the CPU displays options 73 to 76 for thealarm start remaining time on the setting screen. When the user selectsa desired alarm start remaining time, the CPU of the informationprocessing terminal combines the information on the selected alarm startremaining time with information on the selected alarm assignment button,and stores it in the memory or the like.

Next, the user operates the setting instruction button 72 for the alarmgeneration time interval. When receiving this selection, the CPUdisplays options 77 to 80 for the alarm generation time interval in thesetting screen. When the user selects a desired alarm generation timeinterval, the CPU of the information processing terminal associates theinformation on the selected alarm generation time interval with theinformation on the alarm assignment button and the information on thealarm start remaining time that have already been stored in the memory,and stores it in the memory or the like.

Accordingly, information on the alarm assignment button, information onthe alarm start remaining time, and information on the alarm generationtime interval are generated as a set of “user setting informationrelated to the second tactile stimulation.”

Incidentally, in the setting screen in FIG. 19, the number of divisionis displayed as a candidate of the alarm generation time interval.Specifically, the time obtained by dividing the alarm start remainingtime into N is generated as the alarm generation time interval. However,it is not limited thereto, and the value of the actual time interval maybe displayed.

(4. Schedule Setting)

Next, the method of setting the schedule information will be described.

FIG. 20 is a diagram showing the schedule setting screen.

On the schedule setting screen, schedule-kind selection button 81 and82, alarm assignment buttons 83 and 84, a calendar 85, and adetermination button 86 are provided.

The schedule-kind selection buttons 81 and 82 are associated with theuser setting information related to the first tactile stimulation. Onthe schedule-kind selection buttons 81 and 82, the kind of correspondingschedule is written. Further, the schedule-kind selection buttons 81 and82 are displayed in association with icons 87 and 88 assigned to thekind of the schedule.

First, the user uses the input apparatus to operate the schedule-kindselection button (81 or 82) corresponding to the kind of schedule thatis desired to be set in the schedule setting screen. Next, the userselects the date in the calendar 85 corresponding to the time and dateof an event of the schedule that is desired to be set. This selection ofthe date in the calendar 85 is performed by, for example, using theinput apparatus to perform drag and drop operation on the icon 87.

Next, the user inputs a detailed time and date of an event in anevent-time-and-date detail setting screen (not shown) for the selecteddate. Then, the user selects the alarm assignment button (83 or 84) towhich the desired user setting information related to the second tactilestimulation is assigned. Then, the user operates the determinationbutton 86 lastly, and thus, the user's input operation for setting theschedule information is finished.

The CPU of the information processing terminal temporarily stores theuser setting information related to the first tactile stimulationassociated with the schedule-kind selection button (81 or 82) operatedby the user in the schedule setting screen, the input time and date ofan event, and the user setting information related to the second tactilestimulation assigned to the operated alarm assignment button (83 or 84)as a whole entity of the alarm setting information in a memory or thelike.

After that, the CPU of the information processing terminal transmits thealarm setting information stored in the memory or the like to thewearable apparatus 100 by using the communication unit, and stores it inthe memory 112 of the controller 102 of the wearable apparatus 100.

(5. Regarding Alarm Emission Processing in Actuator 1 Unit)

Next, alarm emission processing performed by the controller 102 of thewearable apparatus 100 according to this embodiment will be described.

In the controller 102 of the wearable apparatus 100, the CPU 111generates a timing of emitting alarm on the basis of the current timeand date of the timer 113 and the alarm setting information.Specifically, the CPU 111 calculates a recent time and date of emittingalarm on the basis of the time and date of an event included in thealarm setting information and the user setting information related tothe second tactile stimulation. Then, the CPU 111 determines that it isa timing of emitting alarm when the current time and date of the timer113 matches with the recent time and date.

Note that the recent time and date that is the first evaluation targetis a time and date obtained by subtracting the alarm start remainingtime included in the user setting information related to the secondtactile stimulation from the time and date of an event. The recent timeand date that is the next evaluation target is obtained by adding thealarm generation time interval included in the user setting informationrelated to the second tactile stimulation to the recent time and datethat is the first evaluation target.

When determining the timing of emitting alarm, the CPU 111 generateswaveform information of the first tactile stimulation on the basis ofinformation on the first tactile stimulation included in the alarmsetting information. Next, the CPU 111 calculates the remaining timebefore the time and date of an event on the basis of the user settinginformation related to the second tactile stimulation included in thealarm setting information, and generates waveform information of thesecond tactile stimulation on the basis of the remaining time. The CPU111 temporarily couples the waveform information of the first tactilestimulation and the waveform information of the second tactilestimulation to each other to generate one piece of waveform information.

Then, the CPU 111 outputs a control signal to the driving circuit 103 sothat driving current corresponding to the waveform information issupplied to the actuator 1 (1 a). Accordingly, the actuator 1 (1 a) isdriven, and alarm caused by tactile stimulation is provided to the user.

<First Modified Example>

Next, a modified example of the embodiment will be described.

FIG. 21 is a diagram for describing a wearable apparatus 100 d accordingto a first modified example.

In this wearable apparatus 100 d, driving timing of a plurality ofactuators 1 (actuator 1A, actuator 1B, actuator 1C and actuator 1D) isshifted.

The plurality of actuators 1 (actuator 1A, actuator 1B, actuator 1C andactuator 1D) are driven in the order of being coupled via the belt 10 inseries, e.g., in the clockwise direction in the figure. Alternatively,they may be sequentially driven in the counterclockwise direction in thefigure.

The periods in which two adjacent actuators are driven may partiallyoverlap with each other, or do not need to overlap. Alternatively, theymay be driven across an interval.

Further, they may be driven with driving current corresponding to thewaveform information different for each actuator 1.

The number, time, strength, and speed of waveforms of driving currentsupplied to the actuators 1, and the interval of current supply to theactuators may be optimized so that the speed of movement of the positionat which tactile stimulation is given is gradually increased ordecreased in the order of the actuator 1A, the actuator 1B, the actuator1C, and the actuator 1D, or in the opposite order.

By the wearable apparatus 100 d according to the modified example, it ispossible to provide various pieces of information to the user throughthe movement of a position of tactile stimulation.

Note that as an actuator, not only an actuator that gives tactilestimulation caused by a feeling of pressure but also an actuator thatgives tactile stimulation caused by a feeling of tightness can be used.

It should be noted that the present technology may take the followingconfigurations.

(1) An information presentation apparatus, including:

-   -   an actuator that includes a movable portion and is capable of        linearly driving the movable portion;    -   a control unit that controls the actuator so that the movable        portion is driven corresponding to waveform information; and    -   a belt for attaching the actuator to a user.

(2) The information presentation apparatus according to (1) above, inwhich

-   -   an end portion of the belt is fixed to the movable portion, and    -   a length of a portion of the belt is changed by driving of the        movable portion in a forward or backward direction, the portion        being wrapped around the user,

(3) The information presentation apparatus according to (1) or (2)above, further including

-   -   a communication unit that acquires setting information through        communication, the setting information including at least        stimulation-type information for identifying a kind of the        tactile stimulation, in which    -   the control unit is configured to generate the waveform        information on the basis of the stimulation-type information        included in the acquired setting information.

(4) The information presentation apparatus according to (3) above, inwhich

-   -   the setting information further includes temporal setting        information, and    -   the control unit is configured to generate a timing of driving        the movable portion on the basis of the temporal setting        information included in the acquired setting information.

(5) The information presentation apparatus according to (1) above,further including

-   -   a pressing portion that is freely movable forward and backward        in approaching and separating directions with respect to an        attached portion of the user in synchronization with the movable        portion.

(6) The information presentation apparatus according to (5) above,further including

-   -   a communication unit that acquires setting information through        communication, the setting information including at least        stimulation-type information for identifying a kind of the        tactile stimulation, in which    -   the control unit is configured to generate the waveform        information on the basis of the stimulation-type information        included in the acquired setting information.

(7) The information presentation apparatus according to (5) or (6)above, in which

-   -   the setting information further includes temporal setting        information, and    -   the control unit is configured to generate a timing of driving        the movable portion on the basis of the temporal setting        information included in the acquired setting information.

REFERENCE SIGNS LIST

-   1 actuator-   1 a actuator-   4 slider-   4 a slider-   5 shape-memory alloy wire-   6 elastic plate-   10 belt-   100 wearable apparatus-   100 a wearable apparatus-   101 communication unit-   102 controller-   103 driving circuit-   111 CPU-   112 memory-   113 timer

The invention claimed is:
 1. An information presentation method,comprising: acquiring setting information from an information processingterminal; generating waveform information based on the acquired settinginformation; and transmitting a first tactile stimulation to a userbased on the waveform information, wherein the first tactile stimulationis transmitted to the user based on controlling an actuator, theactuator includes a movable portion, and the actuator is configured tolinearly drive the movable portion to change a length of a portion of abelt wrapped around the user.
 2. The information presentation methodaccording to claim 1, wherein the setting information corresponds tostimulation type information to identify a type of one of the firsttactile stimulation or a second tactile stimulation.
 3. The informationpresentation method according to claim 1, wherein the first tactilestimulation includes at least one of a pressing stimulation or atightening stimulation.
 4. The information presentation method accordingto claim 1, further comprising transmitting a second tactile stimulationto the user.
 5. The information presentation method according to claim4, wherein the second tactile stimulation includes at least one of apressing stimulation or a tightening stimulation.
 6. The informationpresentation method according to claim 2, wherein the settinginformation further includes temporal setting information.
 7. Theinformation presentation method according to claim 6, further comprisinggenerating timing information based on the temporal setting information,wherein the movable portion is linearly driven based on the timinginformation.
 8. An electronic apparatus, comprising: an actuator thatincludes a slider; a belt, wherein an end portion of the belt is fixedto the slider, and the actuator is configured to linearly drive theslider to change a length of a portion of the belt; and a communicationunit configured to acquire setting information from an informationprocessing terminal, wherein the setting information includesstimulation-type information to identify a type of a tactilestimulation, and the actuator is further configured to transmit thetactile stimulation to a user.
 9. The electronic apparatus according toclaim 8, further comprising a control unit configured to control theactuator based on waveform information, wherein the actuator is furtherconfigured to linearly drive the slider corresponding to the waveforminformation.
 10. The electronic apparatus according to claim 8, whereinthe portion of the belt is wrapped around the user.
 11. The electronicapparatus according to claim 9, wherein the control unit is furtherconfigured to generate the waveform information based on thestimulation-type information.
 12. The electronic apparatus according toclaim 9, wherein the setting information further includes temporalsetting information, and the control unit is further configured togenerate timing information based on the temporal setting information,and the actuator is further configured to linearly drive the sliderbased on the timing information.
 13. The electronic apparatus accordingto claim 9, wherein the actuator further comprises a pressing portion,and the pressing portion is configured to move in a forward directionand a backward direction to approach to and separate from an attachedsurface of a body of the user, respectively.
 14. The electronicapparatus according to claim 11, wherein the type of the tactilestimulation includes at least one of a pressed tactile sense, a rubbedtactile sense, a hit tactile sense, or a tightened tactile sense.
 15. Aninformation presentation system, comprising: an electronic apparatusthat comprises: an actuator that includes a slider; a belt, wherein anend portion of the belt is fixed to the slider, and the actuator isconfigured to linearly drive the slider to change a length of a portionof the belt; and a communication unit configured to acquire settinginformation from an information processing terminal, wherein the settinginformation includes stimulation-type information to identify a type ofa tactile stimulation, and the actuator is further configured totransmit the tactile stimulation to a user; and the informationprocessing terminal.
 16. The information presentation system accordingto claim 15, further comprising a control unit configured to control theactuator based on waveform information, wherein the actuator is furtherconfigured to linearly drive the slider corresponding to the waveforminformation.
 17. The information presentation system according to claim15, wherein the portion of the belt is wrapped around the user.
 18. Theinformation presentation system according to claim 16, wherein thecontrol unit is further configured to generate the waveform informationbased on the stimulation-type information.
 19. The informationpresentation system according to claim 16, wherein the settinginformation further includes temporal setting information, and thecontrol unit is further configured to generate timing information basedon the temporal setting information, and the actuator is furtherconfigured to linearly drive the slider based on the timing information.20. The information presentation system according to claim 16, whereinthe actuator further comprises a pressing portion, and the pressingportion is configured to move in a forward direction and a backwarddirection to approach to and separate from an attached surface of a bodyof the user, respectively.
 21. The information presentation systemaccording to claim 18, wherein the type of the tactile stimulationincludes at least one of a pressed tactile sense, a rubbed tactilesense, a hit tactile sense, or a tightened tactile sense.